Altra Size Chart

US (MEN)	EU	UK	JPN (CM)
8	41	7	26
8.5	42	7.5	26.5
9	42.5	8	27
9.5	43	8.5	27.5
10	44	9	28
10.5	44.5	9.5	28.5
11	45	10	29
11.5	46	10.5	29.5
12	46.5	11	30
12.5	47	11.5	30.5
13	48	12	31
14	49	13	32
15	50	14	33